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Though the notion of animal testing might appear trivial, exams are significantly less simple as smearing cold cream or lip gloss on the face of a rabbit. Animals utilized in laboratory testing, often move through extremely painful experiments and millions die each year. Those that survive the experiments avoid getting set free, instead they may be euthanized. In cosmetic animal testing; rabbits, guinea pigs, mice and rats are commonly used. Tests are executed on finished products and individual ingredients to determine the products a higher level toxicity and capability to cause eye or skin irritations, allergies and also other harmful effects. Sweet potatoes are fairly inexpensive but very helpful for our health. It contains more vitamins (A, B, C, E), protein, starch, amino acids as well as over ten types of vital elements (calcium, magnesium, iron, zinc). In addition, the foodstuff comes with a abundant level of fiber that can stimulate stomach contractions. Another important thing is oligosaccharides in sweet potatoes maintain the elasticity, reduce blood levels of cholesterol and ease circulation in the blood vessels. We are living in the century of globalization, and English is viewed as an international language. In high school, studying other languages like Spanish, French, German or Latin are just subjects and that we can forget it when finishing the course. Nonetheless, in these days, Chinese is developing detail by detail and becomes considered one of interesting subjects in high school and college. Furthermore, a great number of learn Chinese through online courses for the Internet. Why? We can see that Chinese can be so popular that 1 billion people speak it. The Chinese language not merely creates joy for Chinese learners in studying but also brings a handy tool for businessmen and tourists on the world.